Figure 3From: Evidence for GC-biased gene conversion as a driver of between-lineage differences in avian base compositionGC3 is more heterogeneous between species than GC1 and GC2. GC content for first, second, and third codon positions and introns (GCi). Species were ordered from left to right by ascending GC3 content. See Additional file 1 for species names.Back to article page